common sources of ion of oxalate anion

oxalate anion | common sources of ion

zinc oxalate hydrate (2 eq) | thulium(III) oxalate (3 eq) | strontium oxalate (1 eq) | sodium oxalate (1 eq) | scandium(III) oxalate hydrate (3 eq) | potassium oxalate monohydrate (1 eq) | nickel(II) oxalate dihydrate (1 eq) | neodymium(III) oxalate hydrate (3 eq) | lutetium(III) oxalate hydrate (3 eq)